Frequencies for first 10,000 rows of pct012d092 variable in sf12010880us23 dataset :

   89 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,506       95.06       95.06
          1 |        337        3.37       98.43
          2 |         89        0.89       99.32
          3 |         28        0.28       99.60
          4 |         13        0.13       99.73
          5 |          6        0.06       99.79
          6 |          7        0.07       99.86
          7 |          2        0.02       99.88
          8 |          2        0.02       99.90
          9 |          3        0.03       99.93
         10 |          2        0.02       99.95
         12 |          2        0.02       99.97
         24 |          1        0.01       99.98
         31 |          1        0.01       99.99
         40 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017